Displaying 2 results from an estimated 2 matches for "trip_id".
2012 Oct 25
5
trying ti use a function in aggregate
Hi -I am using R v 2.13.0. I am trying to use the aggregate function to
calculate the percent at length for each Trip_id and CommonName. Here is a
small subset of the data.
Trip_id Vessel CommonName Length Count
1 230 Sunlight Shad,American 19 1
2 230 Sunlight Shad,American 20 1
3 230 Sunlight Shad,American 21 1
4 230...
2008 Mar 06
1
can't merge zoo ojects and convert to ts (been trying for 2 days)
...2004-Apr-28 13:00:00)
125 159 193
227 261 295
######Now change to ts
as.ts(x)
Error in zoo(coredata(x), tt) :
?x? : attempt to define illegal zoo object
THE DATA
la_time_test2.csv
TRIP_ID Ruta_datetime_start Minutos de viaje
28/04/2004_CM2-CM1_downriver_08:15 28/04/2004 08:15 125
28/04/2004_CM1-CM2_upriver_13:05 28/04/2004 13:05 295
la_time_list2.csv
a_datetime
28/04/2004 01:00
28/04/2004 02:00
28/04/2004 03:00
28/04/2004 04:00
28/04/2004 05:00
28/04/2004 06:00
28/04/2004 07:00
28/...